REYKJAVIK, Iceland (AP) — Iceland raised its aviation alert to red Saturday as a subglacial eruption began at the restless Bardarbunga volcano, which has been rattled by thousands of earthquakes in the past week, the country’s Meteorological Office said.

Icelandic authorities declared a no-fly zone of 100 nautical miles by 140 nautical miles around the eruption as a precaution, but did not shut down air space over most of the island nation in the North Atlantic.

“All airports are open and flights are on schedule,” said spokeswoman Olof Baldursdottir.

Eruptions for volcanoes in Iceland caused aviation problems a few years ago as the above article mentioned.

Volcanoes pose more risks than many believe. It is likely that the supervolcano at Yellowstone will likely someday erupt and cause massive problems.

Yellowstone (July 2014, Michael Thiel)

Last month, heat related to Yellowstone was a factor in road closures:

Extreme heat from a massive supervolcano underneath Yellowstone National Park is melting a major roadway at the popular summertime tourist attraction. Park officials have closed the area to visitors.

Firehole Lake Drive, a 3-mile-plus offshoot of the park’s Grand Loop that connects the Old Faithful geyser and the Madison Junction, is currently off limits. Park operators say the danger of stepping on seemingly solid soil into severely hot water is “high.”

The affected roadway offers access to the Great Fountain Geyser, White Dome Geyser, and Firehole Lake.

“There are plenty of other great places to see thermal features in the park,” park public affairs chief Al Nash told The Weather Channel. “I wouldn’t risk personal injury to see these during this temporary closure.”

While thermal activity under the park often gives way to temperature fluctuations that can soften asphalt throughout Yellowstone, Hottle said the latest wave seems worse than usual. …

The supervolcano has the potential to spew more than 240 cubic miles (1,000 cubic kilometers) of magma across Montana, Idaho, and Wyoming.

Though most scientists believe the risk from supervolcanoes, like in Yellowstone, is for the distant future, the risk is real. Notice something from earlier this year:

The eruption of a “supervolcano” hundreds of times more powerful than conventional volcanoes – with the potential to wipe out civilisation as we know it – is more likely than previously thought, a study has found. …

An analysis of the molten rock within the dormant supervolcano beneath Yellowstone National Park in the United States has revealed that an eruption is possible without any external trigger, scientists said.

Scientists previously believed many supervolcanic eruptions needed earthquakes to break open the Earth’s crust so magma could escape. But new research suggests that this can happen as a result of the build-up of pressure.

Supervolcanoes represent the second most globally cataclysmic event – next to an asteroid strike – and they have been responsible in the past for mass extinctions, long-term changes to the climate and shorter-term “volcanic winters” caused by volcanic ash cutting out the sunlight.

The last known supervolcanic eruption was believed to have occurred about 70,000 years ago at the site today of Lake Toba in Sumatra, Indonesia. …

A supervolcano under Yellowstone Park in Wyoming last erupted about 600,000 years ago, sending more than 1,000 cubic kilometres of ash and lava into the atmosphere – about 100 times more than the Mount Pinatubo eruption in the Philippines in 1982, which caused a noticeable period of global cooling.

Jesus warned about a time earthquakes and troubles:

8 … And there will be earthquakes in various places, and there will be…troubles. These are the beginnings of sorrows. (Mark 13:8)

We may be at this prophetic point as all the earthquakes and other problems that have happened in the past couple of years could be considered as “troubles.”